Answer:
Step-by-step explanation:
I think also option c ok
y = m/3
y 1
---- = --------
m 3
Cross multiply
3*y = 1*m
3y = m
Divide each side by 3
3y/3 = m/3
D
Its D because A is all 90 degrees
Not C because all 90
45
73+62=135
180-135=45
180 is the whole area of the triangle
